Singular:
I io
you tu
he lui, egli
she lei, ella
you (formal) Lei
it esso, essa

Plural:
we noi
you voi
they loro, essi, esse

The formal plural subject pronoun can be either Voi or Loro, depending on the region. However, it is used more rarely now. Note that when using the formal pronouns, to distinguish them from the informal pronouns, you should capitalise the word.

Egli, esso, ella, essa, essi and esse

These subject pronouns are used less frequently than in the past and are considered to be more literary. Indeed you will find that they were used a lot by authors in the past, while modern day writers tend more to use lui. This is an area where the Accademia della Crusca, which has responsibility for promoting the Italian language, decreed that in the majority of cases the use of lui is compulsory, although in others it is optional. It is not our intention to go into such detail on this forum, since we aim simply to explain how to use modern-day Italian. However, it is useful to be aware of the fact that these pronouns are still used and to be able to recognise them and their function.

NOTE:Esso and essa refer to "it" as a replacement for animals, places, or things, but not people; essi and esse refer to "they" as a replacement for animals, places, things and people.

By definition, subject pronouns are used exclusively with verbs: I am, you see, he leaves, etc.

Examples:

Io non parlo tedescoI do not speak German

Tu sei una persona simpaticaYou are a nice person

Lui è andato a Roma per rimanere con alcuni amiciHe went to Rome to stay with some friends

Noi prendiamo il treno per lavoro ogni giornoWe take the train to work every day

Voi siete quelli che amoYou are the ones (that) I love

However, you will find that subject pronouns are used infrequently in Italian. This is because, except in certain tenses, the declension of verbs makes the use of the pronoun unnecessary. For example, when saying it is here, then it is enough simply to say è qui. However, you can use them when you want to emphasise a point.

Examples:

I went to Italy last year(Io) sono andato in Italia l’anno scorso

But you can also say: Anch'io sono andato in Italia l’anno scorso.
In this case you are effectively adding more emphasis: I went to Italy last year TOO.